Electroosmotic flow steers neutral products and enables concentrated ethanol electroproduction from CO2

Electrochemical CO2 reduction reaction (CO2RR) provides a promising route to convert renewable electricity into valuable and storable multi-carbon products such as ethanol. With recent advances in CO2RR catalysts, the electroproduction of ethanol approaches industrially relevant production rates and selectivities. Membrane electrode assembly (MEA) electrolyzers are reaction platforms that, when equipped with highly active and selective catalysts, enable CO2-to-ethanol conversion at … Read More

New technique improves conversion of carbon dioxide into liquid fuels

A new approach to improve conversion of CO2 into liquid fuels has been recently highlighted by PHYS.ORG. The technique is developed by Alexis Bell’s group from Lawrence Berkeley National Laboratory (LBNL) by coating the surface of the copper catalysts with Nafion™ and Sustainion® ionomers, leading to a 250% increase in C2+ production compared to static electrolysis over uncoated copper. (https://www.nature.com/articles/s41560-021-00920-8) . Read More at https://phys.org/

Starch from CO2 – a disruptive revolution

Fig. 1. Design and modular assembly of an artificial starch anabolic pathway. Inner circle: schematic of the artificial starch pathway drafted by computational pathway design with divided modules. C1 here indicates formic acid and methanol. Outer circle: schematic of artificial starch anabolic pathway (ASAP) 1.0, with individual modules colored. Auxiliary enzymes and chemicals are indicated. ADPG, ADP glucose; aox, alcohol … Read More

pH Dependence of CO2 Reduction to CO

Fig. 1 CO2 electrolysis. Schematic representation of the gold gas diffusion electrode system CO2 electrolysis has mainly been performed in neutral or alkaline media, but some fundamental work shows that high selectivities for CO can also be achieved in acidic media. A recent paper, published in nature communications (doi.org/10.1038/s41467-021-24936-6), reported that CO2 electrolysis can operate at pH 2-4 in sulfate … Read More

Low-Valence Znδ+(0<δ<2) Single-Atom Material as Highly Efficient Electrocatalyst for CO2 Reduction

The electrochemical CO2 reduction reaction (eCO2RR) represents a promising solution for mitigation of excessive CO2 concentration in the atmosphere as well as for utilization and transformation of CO2 into value-added chemicals and commodities. This technology, if powered by renewable energy such as solar and wind power, has great potential to reach industrial level and achieve long-term energy storage. However, the … Read More

How Catalyst Dispersion Solvents Affect CO2 Electrolyzer Gas Diffusion Electrodes

How Catalyst Dispersion Solvents Affect CO2 Electrolyzer Gas Diffusion Electrodes

The carbon dioxide reduction reaction (CO2RR) technology has the potential to produce carbon-based products at costs competitive with existing industrial processes if the CO2RR can be performed at high current densities, high faradaic efficiencies (FE) and low full cell voltages (Ecell). Typically, a “zero-gap” CO2 electrolyzer with a gaseous CO2 feedstock has been shown to selectively mediate the CO2RR at … Read More

Local CO2 Regeneration Enables Single Pass CO2 Conversion Exceeding 85% in the Electrosynthesis of Multicarbon Products

The carbon dioxide reduction reaction (CO2RR) presents the opportunity to consume CO2 and produce desirable products. However, the alkaline conditions required for productive CO2RR result in the bulk of input CO2 being lost to bicarbonate and carbonate. This loss imposes a 25% limit on the conversion of CO2 to multicarbon (C2+) products for systems that use anions as the charge … Read More

Charge Carriers in Zero-gap Anion Exchange Membrane CO2 Electrolysis to CO

Schematic Proposed electrochemical/chemical reactions, ionic species and water transport in a zero-gap AEM CO2 electrolyzer. Humidified CO2, and 10 mM KHCO3 are fed to cathode and anode of a CO2 electrolyzer, respectively. Adapted from [1] Charge Carriers in Zero-gap Anion Exchange Membrane CO2 Electrolysis to CO: OH, CO32- or HCO3–? The electrochemical conversion of CO2 to commercially valuable products, such … Read More

1000 Hr Performance and Stability Evaluation of CO2 Conversion to Formic Acid Using a Three-Compartment Electrolyzer Design

1000 Hr Performance and Stability Evaluation of CO2 Conversion to Formic Acid Using a Three-Compartment Electrolyzer Design

Schematic of the Dioxide Materials patented [1] 3-compartment  electrolyzer design configuration producing  formic acid using only CO2, water , and electricity.  Schematic adapted from Kaczur et. al [2]. The electrochemical conversion of carbon dioxide (CO2) into fuels and feedstocks has received increased attention during the past five years due to the global goal of reducing green house gas emissions (GHG).  … Read More

Green Hydrogen as a Clean Process Alternative in the Iron and Steel Industry

Simplified comparison of the conventional direct reduced iron ore process (DRI) using natural gas versus a green hydrogen route which produces significantly less CO2 emissions. The traditional iron ore reduction process in producing iron utilizes a chemical reaction between iron oxide and carbon monoxide generated from heating coke in a blast furnace. Coke is a processed carbon material made from … Read More